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Benmatt912

Member Since: 05 Jan 2014
Location: Worcestershire
Posts: 32

Help with mystery switch

Hi All.
I have a mysterious Blue switch under my dash, below the dials, and I have no idea what it does.

Click image to enlarge

My Defender was originally owned/commissioned by the environment agency, so might have been fitted by them for something.
Ive had a couple of ideas but everything seems to still work, still starts, with the switch in either position.One thought was if it was maybe for a pump to transfer fuel between tanks, however there inst a tank in either of the rear wheel arches, but there is a weird "u" shaped pipe in the rear passenger wheel arch.

Click image to enlarge

There is also what looks like a battery isolator switch connected up in the battery box, sticking through into the passenger foot well, but there was no key for it supplied with the vehicle. The previous owner thought it was where you plugged the winch controller in, so was probably fitted when the defender was owned by the Environment Agency.
The Defender is fitted with a Warn 9.5ti Winch which i haven't managed to get working (But will get proper training on how to use it when it does).

Click image to enlarge

Am planning on getting a replacement key and see what the isolator switch does.

Any ideas what the blue switch could be for.

25th Jan 2014 4:49pm

dorstsmith2

Member Since: 06 Aug 2012
Location: On the third rock from the sun in dorset
Posts: 188

weird "u" shaped pipe in the rear passenger wheel arch. (tank vent ) fitted on mine to

mysterious switch under my dash, below the dials fitted mine too, but its not a mysterious

25th Jan 2014 4:57pm

Benmatt912

Member Since: 05 Jan 2014
Location: Worcestershire
Posts: 32

What does the switch do in yours then?

25th Jan 2014 4:59pm

ARC99

Member Since: 19 Feb 2013
Location: North Yorkshire
Posts: 1831

2008 Defender 110 Puma 2.4 USW Cairns Blue

Any sign of a beacon light having been fitted to the roof. Don't make old people mad.
We don't like being old in the first place,
so it doesn't take much to

us off.

Richard

25th Jan 2014 5:01pm

Benmatt912

Member Since: 05 Jan 2014
Location: Worcestershire
Posts: 32

There is a flat plate at the front of the roof rack but no other obvious signs.

25th Jan 2014 5:03pm

leeds

Member Since: 28 Dec 2009
Location: West Yorkshire
Posts: 8580

Fuel tank vent pipe, might be worth considering extending it up into inside of rear of the vehicle.

Isolation switch is probably controlling power to winch.

Blue switch probably controlling a now missing light bar.

Brendan

25th Jan 2014 5:10pm

dorstsmith2

Member Since: 06 Aug 2012
Location: On the third rock from the sun in dorset
Posts: 188

mysterious switch under my dash, below the dials fitted mine too,as i its no mysterious battery volt meter

25th Jan 2014 5:15pm

Benmatt912

Member Since: 05 Jan 2014
Location: Worcestershire
Posts: 32

Mystery solved. Pulled the switch out and found a white wire and a yellow wire going into it. Managed to traise the white wire, through parts of the engine bay, to the front spots on the A bar. It isolates them from the full beams.

26th Jan 2014 4:29pm

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